Soitec

Capital/Financing Update • Jul 22, 2024

HALF-YEAR STATEMENT ON THE IMPLEMENTATION OF THE LIQUIDITY CONTRACT AS OF JUNE 30, 2024

Bernin (Grenoble), France, July 22, 2024 – Soitec (Euronext Paris), a world leader in the design and manufacturing of innovative semiconductor materials, announces that, under the liquidity contract entrusted to BNP Paribas on July 3, 2023, the following resources appeared on June 30, 2024 on the liquidity account:

• 31,705 Soitec shares, and
• €3,863,367

During the 1 st semester of 2024, a total of:

• 191,207 shares were bought for €23,068,132 (i.e. 3,468 transactions).
• 173,247 shares were sold for €20,849,967 (i.e. 3,231 transactions).

We remind you that:

• 1. At the time of the previous half-yearly balance sheet on December 31, 2023, the following resources appeared on the liquidity account:
• 12,595 Soitec shares, and
• €6,207,452
• 1. During the 2nd semester of 2023, a total of:
• 234,920 shares were bought for €37,766,839 (i.e. 4,356 transactions);
• 220,575 shares were sold for €35,564,595 (i.e. 4,527 transactions).
• 1. On July 3, 2023, the day before the start of trading, the following resources appeared on the liquidity account: €8,000,000.

Aggregate data for each trading day in the 1 st semester of 2024 are given in the appendix to this press release.

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Agenda

First-quarter 2024-2025 revenue: July 23, 2024, after market close.

Annual General Meeting: July 23, 2024.

Analyst call: July 24, 2024 at 8:00 a.m. CET.

About Soitec

Soitec (Euronext - Tech 40 Paris), a world leader in innovative semiconductor materials, has for more than 30 years developed cutting-edge products that combine technological performance and energy efficiency. From its global headquarters in France, Soitec is expanding internationally with its unique solutions. The company occupies a key position in the semiconductor value chain, serving three strategic markets: mobile communications, automotive and industry, and smart devices. Soitec draws on the talent and diversity of its 2,300 employees, of 50 different nationalities, across its sites in Europe, the United States and Asia. More than 4,100 patents have been registered by Soitec.

Soitec, SmartSiC™ and Smart Cut™ are registered trademarks of Soitec.

For more information:https://www.soitec.com/en/

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Investor Relations: Media contacts:

investors@soitec.com Isabelle Laurent

+33 6 42 37 54 17 isabelle.laurent@oprgfinancial.fr

Fabrice Baron +33 6 14 08 29 81 fabrice.baron@oprgfinancial.fr

Daily report on SOITEC S.A.'s liquidity contract for the period 01/01/2024 to 06/30/2024 prepared in accordance with the provisions of article 2-3 of AMF Decision no. 2021-01 of June 22, 2021

Client	Date	Purchases			Sales
		Number of shares	Number of transactions	Traded volume in EUR	Number of shares	Number of transactions	Traded volume in EUR
SOITEC S.A.	01/02/2024	2,800	71	451,363.35	1,110	23	181,051.15
SOITEC S.A.	01/03/2024	3,400	43	527,390.00	1,950	37	303,798.30
SOITEC S.A.	01/04/2024	2,750	59	405,505.00	2,500	94	370,989.90
SOITEC S.A.	01/05/2024	1,750	30	256,112.50	1,750	41	256,933.45
SOITEC S.A.	01/08/2024	2,750	60	408,245.00	3,100	115	463,160.50
SOITEC S.A.	01/09/2024	1,550	47	233,810.00	1,400	31	211,530.00
SOITEC S.A.	01/10/2024	1,750	39	265,764.20	1,750	35	266,230.30
SOITEC S.A.	01/11/2024	2,750	47	415,294.90	1,818	45	275,769.40
SOITEC S.A.	01/12/2024	1,400	25	205,012.50	1,750	29	257,635.00
SOITEC S.A.	01/15/2024	3,500	57	503,172.45	1,280	42	183,570.55
SOITEC S.A.	01/16/2024	1,060	14	146,529.90	1,060	14	147,265.20
SOITEC S.A.	01/17/2024	2,400	43	326,075.00	1,400	46	191,607.50
SOITEC S.A.	01/18/2024				3,200	51	438,745.00
SOITEC S.A.	01/19/2024	108	2	15,368.40	288	9	41,155.20
SOITEC S.A.	01/22/2024	1,050	24	152,048.15	1,050	16	152,390.00
SOITEC S.A.	01/23/2024	1,600	37	226,145.00	1,050	31	148,848.65

SOITEC S.A.	01/24/2024	2,650	37	379,487.50	2,650	29	383,595.00
SOITEC S.A.	01/25/2024	1,800	40	249,717.60
SOITEC S.A.	01/26/2024	2,100	21	284,357.50	2,100	91	287,280.00
SOITEC S.A.	01/29/2024	1,250	17	167,325.00	1,250	41	167,657.50
SOITEC S.A.	01/30/2024	1,050	45	141,960.00	1,250	21	169,840.00
SOITEC S.A.	02/01/2024				1,400	30	191,870.00
SOITEC S.A.	02/02/2024	850	2	116,960.00
SOITEC S.A.	02/05/2024	1,900	42	254,895.00
SOITEC S.A.	02/06/2024	700	13	92,470.00	918	21	122,534.20
SOITEC S.A.	02/07/2024	598	15	78,058.00	598	12	78,411.00
SOITEC S.A.	02/08/2024	1,550	27	204,415.05	3,200	50	423,872.30
SOITEC S.A.	02/09/2024	2,540	54	355,556.40	2,740	57	386,974.05
SOITEC S.A.	02/12/2024	1,050	21	152,612.50	1,050	18	152,705.00
SOITEC S.A.	02/13/2024	2,250	37	321,942.50	2,150	56	308,537.50
SOITEC S.A.	02/14/2024	600	12	84,947.50	2,550	44	366,865.00
SOITEC S.A.	02/15/2024	1,400	33	203,497.95
SOITEC S.A.	02/16/2024	700	19	102,830.00	1,050	19	154,927.50
SOITEC S.A.	02/19/2024	1,875	40	268,450.00	1,750	44	251,342.50
SOITEC S.A.	02/20/2024	1,500	34	210,022.50	1,500	18	210,220.00
SOITEC S.A.	02/21/2024	2,500	66	349,762.50	2,500	68	351,055.00
SOITEC S.A.	02/22/2024	2,350	71	344,142.40	2,850	38	417,935.80

SOITEC S.A.	02/23/2024	1,400	27	199,010.00	1,145	25	163,278.25
SOITEC S.A.	02/26/2024	1,750	38	243,760.00	1,750	43	244,070.00
SOITEC S.A.	02/27/2024	2,000	39	277,232.50	2,700	52	376,370.00
SOITEC S.A.	02/28/2024	2,100	41	292,880.00	1,300	35	180,887.55
SOITEC S.A.	02/29/2024	1,750	32	238,087.50	1,525	26	207,853.75
SOITEC S.A.	03/01/2024	700	13	95,865.00	1,000	13	137,205.00
SOITEC S.A.	03/04/2024	1,350	20	184,450.00	700	18	96,040.00
SOITEC S.A.	03/05/2024	1,050	10	140,595.00	870	20	116,612.50
SOITEC S.A.	03/06/2024	700	8	93,555.00	1,250	20	167,452.50
SOITEC S.A.	03/07/2024	1,250	23	167,082.50	2,100	33	284,095.00
SOITEC S.A.	03/08/2024	3,250	46	435,042.50
SOITEC S.A.	03/12/2024	700	19	90,067.60	1,750	31	226,310.00
SOITEC S.A.	03/13/2024	830	11	108,787.50	1,350	20	177,350.00
SOITEC S.A.	03/14/2024	1,900	43	248,838.45	1,150	19	152,373.95
SOITEC S.A.	03/15/2024	1,750	34	222,845.00
SOITEC S.A.	03/18/2024	1,050	10	130,165.00	1,050	19	131,582.50
SOITEC S.A.	03/19/2024	1,400	9	170,660.00	1,400	36	171,796.25
SOITEC S.A.	03/20/2024	1,400	26	169,767.50	700	14	85,435.00
SOITEC S.A.	03/21/2024	1,400	21	172,812.50	2,100	30	259,910.00
SOITEC S.A.	03/22/2024	2,450	40	299,897.50	1,262	21	155,774.20
SOITEC S.A.	03/25/2024	700	16	85,172.50	750	14	92,070.00

SOITEC S.A.	03/26/2024	1,458	30	178,541.40	125	1	15,343.75
SOITEC S.A.	03/27/2024	800	19	96,505.00	700	18	84,805.00
SOITEC S.A.	03/28/2024	7,600	101	760,975.00	2,100	17	221,200.00
SOITEC S.A.	04/02/2024	2,240	34	224,135.50	2,840	37	285,057.30
SOITEC S.A.	04/03/2024	3,250	36	315,175.00	3,250	11	316,700.00
SOITEC S.A.	04/04/2024	1,750	23	169,067.50
SOITEC S.A.	04/05/2024	1,750	39	162,082.50	1,600	28	149,321.75
SOITEC S.A.	04/08/2024	1,750	20	157,920.00	1,384	45	125,124.60
SOITEC S.A.	04/09/2024	1,641	21	148,927.00	3,041	41	277,574.35
SOITEC S.A.	04/10/2024	1,400	18	130,830.00	1,400	24	131,757.50
SOITEC S.A.	04/11/2024	2,300	41	214,560.00	2,300	38	215,465.00
SOITEC S.A.	04/12/2024	2,150	32	200,420.00	1,750	24	163,732.50
SOITEC S.A.	04/15/2024	1,700	22	156,347.50	1,700	29	156,852.50
SOITEC S.A.	04/16/2024	1,400	14	125,282.50	1,400	16	125,667.50
SOITEC S.A.	04/17/2024	700	9	63,122.50	700	13	63,140.00
SOITEC S.A.	04/18/2024	1,700	27	153,433.75	1,700	33	153,860.00
SOITEC S.A.	04/19/2024	2,250	17	194,873.00	2,250	57	197,871.60
SOITEC S.A.	04/22/2024	350	9	30,835.00	350	7	30,887.50
SOITEC S.A.	04/23/2024	1,150	22	101,612.50	1,750	24	155,357.50
SOITEC S.A.	04/24/2024	3,000	34	281,320.00	2,900	39	272,720.00
SOITEC S.A.	04/25/2024	1,565	22	139,232.75	1,500	17	134,720.00

SOITEC S.A.	04/26/2024				1,400	15	127,260.00
SOITEC S.A.	04/29/2024	584	8	53,997.10	584	29	54,113.90
SOITEC S.A.	04/30/2024	700	14	64,960.00	700	7	65,047.50
SOITEC S.A.	05/02/2024	1,050	15	95,620.00	1,000	19	91,200.00
SOITEC S.A.	05/03/2024	1,500	10	140,700.00	1,750	25	164,325.00
SOITEC S.A.	05/06/2024	500	10	47,397.50	1,050	21	99,855.00
SOITEC S.A.	05/07/2024	1,323	20	127,083.95	1,273	16	122,380.90
SOITEC S.A.	05/08/2024	700	11	67,462.50	700	16	67,672.50
SOITEC S.A.	05/09/2024	350	8	33,792.50	700	5	67,987.50
SOITEC S.A.	05/10/2024	350	9	34,072.50	1,875	22	185,200.00
SOITEC S.A.	05/13/2024	1,750	33	173,460.00	1,450	37	144,060.00
SOITEC S.A.	05/14/2024	122	2	12,120.70	3,000	44	305,242.50
SOITEC S.A.	05/15/2024	1,050	21	112,315.00	1,050	15	112,665.00
SOITEC S.A.	05/16/2024				700	13	76,545.00
SOITEC S.A.	05/17/2024	700	11	77,490.00	350	5	39,165.00
SOITEC S.A.	05/20/2024	1,150	12	125,175.00	1,182	20	129,304.00
SOITEC S.A.	05/21/2024	1,400	27	154,455.00	1,400	20	154,805.00
SOITEC S.A.	05/22/2024	3,750	64	425,330.00	3,750	44	427,385.00
SOITEC S.A.	05/23/2024	1,750	27	192,920.00	1,750	21	193,347.00
SOITEC S.A.	05/24/2024	2,270	28	249,417.00	3,250	50	360,570.00
SOITEC S.A.	05/27/2024	2,500	53	285,300.00	1,750	27	200,585.00

SOITEC S.A.	05/28/2024	1,400	16	157,710.00	1,400	18	158,060.00
SOITEC S.A.	05/29/2024	1,750	37	194,070.00
SOITEC S.A.	05/30/2024	1,104	21	121,081.20	1,504	20	165,123.20
SOITEC S.A.	05/31/2024	1,050	29	115,325.00	1,050	20	115,535.00
SOITEC S.A.	06/03/2024	1,750	37	191,625.00
SOITEC S.A.	06/04/2024	950	20	102,505.00	1,050	16	113,960.00
SOITEC S.A.	06/06/2024	800	31	91,000.00	800	11	91,440.00
SOITEC S.A.	06/07/2024	1,650	17	185,875.50	1,650	25	186,510.00
SOITEC S.A.	06/10/2024	700	14	77,554.00	700	22	77,816.20
SOITEC S.A.	06/11/2024	1,750	54	197,470.00	1,750	34	198,159.80
SOITEC S.A.	06/12/2024	932	30	106,250.20	2,375	27	274,575.00
SOITEC S.A.	06/13/2024	2,450	58	285,600.00	700	23	81,830.00
SOITEC S.A.	06/14/2024	1,750	33	197,995.00
SOITEC S.A.	06/17/2024	1,700	29	186,010.00	1,250	40	137,520.80
SOITEC S.A.	06/18/2024	600	24	66,420.00	700	16	77,560.00
SOITEC S.A.	06/19/2024	1,750	32	189,875.00	700	11	76,055.00
SOITEC S.A.	06/20/2024	1,250	30	133,310.00	1,050	12	113,050.00
SOITEC S.A.	06/21/2024	2,457	57	256,528.30	350	12	37,030.00
SOITEC S.A.	06/24/2024	1,700	44	178,872.60	2,200	37	231,451.10
SOITEC S.A.	06/25/2024	1,400	21	147,630.00	1,200	36	127,585.00
SOITEC S.A.	06/26/2024	700	12	74,970.00	700	11	75,145.00

Purchases:	191,207	(3,468 transactions)	23,068,132€	Sales:	173,247	(3,231 transactions)	20,849,967€
TOTAL		191,207	3,468	23,068,132	173,247	3,231	20,849,967
SOITEC S.A.	06/28/2024	1,400	34	144,043.40	1,500	22	155,392.50
SOITEC S.A.	06/27/2024	2,100	45	220,325.00	1,400	23	147,525.00